baumfalk



`(N0 Model.) 1 E D. BAUMFALK.

l Binding Books.

Patented May 3, 1881.

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rra STATES i HERMANN D. BAUMFALK, OF 'ESENS, HANOVER, PRUSSIA, GERMANY. l

BINDING BOOKS.

SPECIFICATION forming'part of Letters Patent No. 240,805, dated May `3, 18,81.

Application filed December 9, 1880.

,y To all whom 'Lt may concern:

lrussia, in the Empire of' Germany, have invented anew and useful Improvement in Binding Books, (for which I have received German Letters Patent N o. 7 ,392, for fifteen years, dated September 11, 1878,) ot' which the following is a specification.

Figure l is-a vertical cross-section, showing a book undergoing my improved process of bindin Fig. 2 is a similar view thereof` after the back has been rasped or filed. Fig. 3 isa vertical cross-section, showing the process as applied to straight books. Fig. 4 is a similar section o't' the round-backed book, showin g the leaves after they are fastened together by the backing, which is glued thereon. Fig. 5 is a-n end-view of a completely bound book.

l Ieretof'orc books have generally been bound by sewing or stitching the sheets together, and then fastening them suitably wit-hin the ordinary covers, er by gluing the sheets to plain fabrics. Y

My invention is designed to do away with such stitching and sewing, and to bind books bya method of gluing the separate leaves upon. and l'elting them` together with certain fabric, to which they are all attached, and then fastening them into the outside cover in the ordinary manners. l

l first take the printed folded sheets, laid on one another in their regular order, and cut the back of the book.

them in such a manner that each leaf' is separated and disconnected from any other leaf at mark the cut back with a few pencil-lines. The portion which will form the back of the book, and to which the flexible cloth is to be applied, may be distinguished from the cut front without reqnirin g the book-binder to open the book. l then glue or fasten together the six or so outside leaves, on each side of the book, at those It is then advisable to (No model.) Patented in Germany September 11, 187B.

ment, rasp or file the back in the direction of the length of the'book-leaves. By this rasp.4

ing operation the back edges of the leaves are made fibrous or finely subdivided, as` indicated at d in Fig. 2. Over this rasped back is spread a coating ot' glue, which thoroughly permeates the divided parts of the leaves, and before this glue is allowed to drya coating of stronger glue is put on, preferably very hot, and on this coating, while still fresh,.is laid a piece,I f, of cotton flannel or some 'similar fabric, with its woolly side next the glue. This fabric should be somewhat wider than the back of the book to which it is applied and extend on each side thereof, as shown in Fig.v 4. The fibrous face of the cotton flannel enters into intimate connection with the finely-divided parts of' the leaves. vIn fact the two fabrics interlock, the fibrous projections of the paper entering between those of the cotton flannel, ordinarily termed canton-flannel .1 This canton or cotton tiannel is afabrie having a woolly surface, as is well known.

The description alre'ady given applies when the back of the book is rounded, as shown in Figs. 1 and 2. It' the book is straight-backed,

as shown in Fig. 3, which is the style em` ployed when the book need not open very widely, the leaves A are placed between the two movable sides of' the press a a, which sides arecut away near their tops, so as to leave a wider space there than below, andthe leaves A put between these sides a care thus allowed to spread more widely at their upper portion, e, than below. The book is then rasped in the manner above described, the layer of thin glue spread thereon, and on this layer is placed and pressed cotton wadding or similar substanee,upon which the glue is allowed to dry. The cotton wadding adds to the tiber by which the rasped leaves are finally attached tothe back of the binding.v Upon this surface, vwhen dry, is spread a coating of hot strong glue, and on this the cotton flannel f, as heretofore described, is placed, extending slightly beyond the edges of the back. lBoth the round-back and straight-back books are fastened in their outside covers with the aid of the piece f, in the ordinary manner.

When the backs of' the books are grooved IOO with a saw transversely, in the ordinary manner of book-binders, as is done with thin books, school-books, and the like, the first and last six sheets need not be fastened` together in the manner heretofore described. The glue bctween said last leaves is indicated at h in Fig. 5. It serves to insure proper connection of the last leaf with the side i of the cover.

The advantages of this new process ot' bindingbooks are that it is cheaper, more rapid, and more convenient than the old method of stitching, and that, nevertheless, books bound in this way are no more liable to como apart than stitched books. There is also a great advantage gained by my method, in `that it permits of a more .perfect ornamentation of the exposed edges of the leaves. These may, where my process is employed, be ornamented by taking the sections of the book, before the leaves are rasped, as above described, and ornamenting the edges of each section by themselves, and then putting the sections back in their proper position and proeeeding with the binding, as described. It is thus possible to have the different sections of leaves ornamented by entirely different processes and with different colors and applications thereof, producing, when the leaves are bound together and ries.

come side by side, novel and beautiful cileets, which were impossible by the old method7 where the leavesofa book had all to be ornamented at one operation.

I am aware that rasped edges of the paper leaves have heretofore been celnented to fab- 'lhis I do not claim, as it leaves a distinct layer of glue or cement between the fabric of the back and the paper. The glue, when dry, is liable to crack, thus allowing the conncetion to sever; but by my invention the glue is traversed by the intel-locking fibers ot' the paper and of the woolly cloth.

I claim,-

As a new article of manufacture,'a book whose leaves are separated from one another and made fibrous at the back, and whose back Strip, j', is made of cotton annel, having its woollysidc next to the leaves,so that the fibers of the paper and the flannel are intc'rlocked and felted together, and also united by glue, substantially as specitied.

HERMANN DIEDRIUII BAI'llFALh'.

Witnesses:

A. A. REIFORT, KARL TANNEN. 

